A touch panel electrode includes a transparent base, two or more first electrode patterns, and two or more second electrode patterns. The first electrode pattern and the second electrode pattern face each other being insulated, and overlap each other. Each of the first electrode pattern and the second electrode pattern is a combination of a plurality of cells formed by thin metal wires. The area of an overlapping portion between the first electrode pattern and the second electrode pattern is greater than 4 mm2 and less than 20 mm2.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A touch panel electrode comprising: two or more first electrode patterns; and two or more second electrode patterns, wherein the first electrode pattern and the second electrode pattern overlap each other being insulated with a distance of equal to or less than 150 μm, the first electrode pattern and the second electrode pattern extend perpendicular to each other, each of the first electrode pattern and the second electrode pattern is a combination of a plurality of cells formed by thin metal wires, among a plurality of cells of the second electrode pattern which are included in one overlapping portion and are arranged in a direction in which the first electrode pattern extends, a distance between a leading end of a cell that is located at one end and a leading end of a cell that is located at the other end is a first width of the overlapping portion along the first electrode pattern in a top view, among a plurality of cells of the first electrode pattern which are included in one overlapping portion and are arranged in a direction in which the second electrode pattern extends, a distance between a leading end of a cell that is located at one end and a leading end of a cell that is located at the other end is a second width of the overlapping portion along the second electrode pattern in a top view, the area of the overlapping portion between the first electrode pattern and the second electrode pattern is greater than 4 mm 2 and less than 20 mm 2 , and the area of the overlapping portion is the product of the first width and the second width.
2. The touch panel electrode according to claim 1 , wherein the area of the overlapping portion is greater than 4 mm 2 and equal to or less than 16 mm 2 .
3. The touch panel electrode according to claim 2 , wherein, in the overlapping portion, the position of a plurality of cells forming the overlapping portion in the first electrode pattern deviates from the position of a plurality of cells forming the overlapping portion in the second electrode pattern in a top view.
4. The touch panel electrode according to claim 3 , wherein cells forming the first electrode pattern and cells forming the second electrode pattern have the same size.
5. The touch panel electrode according to claim 2 , wherein the surface electrical resistance of the first electrode pattern and the surface electrical resistance of the second electrode pattern are equal to or greater than 0.1 ohms/square and equal to or less than 300 ohms/square.
6. The touch panel electrode according to claim 5 , wherein, in the first electrode pattern or the second electrode pattern with at least higher surface electrical resistance, the ends of the thin metal wires form a curved shape.
7. The touch panel electrode according to claim 1 , wherein at least four cells are arranged within the first width, and at least four cells are arranged within the second width.
8. The touch panel electrode according to claim 2 , wherein at least four cells are arranged within the first width, and at least four cells are arranged within the second width.
9. The touch panel electrode according to claim 1 , wherein, in the overlapping portion, the position of a plurality of cells forming the overlapping portion in the first electrode pattern deviates from the position of a plurality of cells forming the overlapping portion in the second electrode pattern in a top view.
10. The touch panel electrode according to claim 9 , wherein cells forming the first electrode pattern and cells forming the second electrode pattern have the same size.
11. The touch panel electrode according to claim 1 , wherein the surface electrical resistance of the first electrode pattern and the surface electrical resistance of the second electrode pattern are equal to or greater than 0.1 ohms/square and equal to or less than 300 ohms/square.
12. The touch panel electrode according to claim 11 , wherein, in the first electrode pattern or the second electrode pattern with at least higher surface electrical resistance, the ends of the thin metal wires form a curved shape.
13. The touch panel electrode according to claim 1 , wherein a gap corresponding to at least the average diameter of the cells is formed between a portion other than the overlapping portion in the first electrode pattern and a portion other than the overlapping portion in the second electrode pattern in a top view.
14. The touch panel electrode according to claim 1 , wherein a gap that is equal to or greater than 200 μm is formed between a portion other than the overlapping portion in the first electrode pattern and a portion other than the overlapping portion in the second electrode pattern in a top view.
15. A touch panel comprising: the touch panel electrode according to claim 1 .
16. A display device comprising: the touch panel according to claim 15 .
17. The touch panel electrode according to claim 1 , wherein a first dummy layer which is electrically insulated from the first electrode patterns is formed between the two adjacent first electrode patterns, and a second dummy layer which is electrically insulated from the second electrode patterns is formed between the two adjacent second electrode patterns.
18. The touch panel electrode according to claim 1 , wherein a resistance between both ends of the first electrode pattern is less than 15 kiloohms, and a resistance between both ends of the second electrode pattern is less than 15 kiloohms.
19. The touch panel electrode according to claim 1 , wherein a position of the plurality of cells forming the overlapping portion in the first electrode pattern deviates from the position of the plurality of cells forming the overlapping portion in the second electrode pattern in a top view, and in the first electrode pattern and the second electrode pattern, in portions other than the overlapping portion, a cross-shaped dummy pattern is formed in an opening portion of each cell.
20. The touch panel electrode according to claim 1 , wherein the area of the overlapping portion between the first electrode pattern and the second electrode pattern is greater than 18 mm 2 and less than 20 mm 2 .
21. A touch panel electrode comprising: two or more first electrode patterns; and two or more second electrode patterns, wherein the first electrode pattern and the second electrode pattern overlap each other being insulated with a distance of equal to or less than 150 μm, the first electrode pattern and the second electrode pattern extend perpendicular to each other, each of the first electrode pattern and the second electrode pattern is a combination of a plurality of cells formed by thin metal wires, and the area of an overlapping portion between the first electrode pattern and the second electrode pattern is equal to or greater than 11 mm 2 and less than 20 mm 2 .
22. The touch panel electrode according to claim 21 , wherein among a plurality of cells of the second electrode pattern which are included in one intersection portion and are arranged in a direction in which the first electrode pattern extends, a distance between a leading end of a cell that is located at one end and a leading end of a cell that is located at the other end is a first width of the intersection portion along the first electrode pattern in a top view, among a plurality of cells of the first electrode pattern which are included in one intersection portion and are arranged in a direction in which the second electrode pattern extends, a distance between a leading end of a cell that is located at one end and a leading end of a cell that is located at the other end is a second width of the intersection portion along the second electrode pattern in a top view, the area of the intersection portion is the product of the first width and the second width, at least four cells are arranged within the first width, and at least four cells are arranged within the second width.
23. The touch panel electrode according to claim 21 , wherein a gap corresponding to at least the average diameter of the cells is formed between a portion other than the overlapping portion in the first electrode pattern and a portion other than the overlapping portion in the second electrode pattern in a top view.
24. The touch panel electrode according to claim 21 , wherein a gap that is equal to or greater than 200 μm is formed between a portion other than the overlapping portion in the first electrode pattern and a portion other than the overlapping portion in the second electrode pattern in a top view.
25. The touch panel electrode according to claim 21 , wherein a first dummy layer which is electrically insulated from the first electrode patterns is formed between the two adjacent first electrode patterns, and a second dummy layer which is electrically insulated from the second electrode patterns is formed between the two adjacent second electrode patterns.
26. A touch panel electrode comprising: two or more first electrode patterns; and two or more second electrode patterns, wherein the first electrode pattern and the second electrode pattern overlap each other being insulated with a distance of equal to or less than 150 μm, the first electrode pattern and the second electrode pattern extend perpendicular to each other, each of the first electrode pattern and the second electrode pattern is a combination of a plurality of cells formed by thin metal wires, among a plurality of cells of the second electrode pattern which are included in one overlapping portion and are arranged in a direction in which the first electrode pattern extends, a distance between a leading end of a cell that is located at one end and a leading end of a cell that is located at the other end is a first width of the overlapping portion along the first electrode pattern in a top view, among a plurality of cells of the first electrode pattern which are included in one overlapping portion and are arranged in a direction in which the second electrode pattern extends, a distance between a leading end of a cell that is located at one end and a leading end of a cell that is located at the other end is a second width of the overlapping portion along the second electrode pattern in a top view, the area of the overlapping portion between the first electrode pattern and the second electrode pattern is equal to or greater than 11 mm 2 and less than 20 mm 2 , and the area of the overlapping portion is the product of the first width and the second width.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
September 4, 2018
March 31, 2020
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